Agentforce –> Salesforce’s Einstein Generative AI Platform is not currently available in Developer Edition orgs. However, you can sign up for a trial org through one of the Trailhead modules. This org will be available for you for a limited time only.
Go to trail head and then go to “Get Ready for Agentforce” trails module or go to the below link directly
https://trailhead.salesforce.com/content/learn/projects/quick-start-build-your-first-agent-with-agentforce/configure-an-agentforce-service-agent?trail_id=get-ready-for-agentforce
Then click on “Get started for free” button. You will get the agentforce enabled org username and password reset email to your email address.

He is a technology evangelist, Salesforce trainer, blogger, and working as a Salesforce Technical Lead. After working in Java based project implementation, he jumped to the Salesforce system on a whim and never looked back. He fell in love with Salesforce’s flexibility, scalability, and power. He expanded his knowledge of the platform and became a Certified App Builder, Administrator, Platform Developer I, II, SalesCloud Consultant, total 11 x certified while leading the Salesforce implementation and technology needs. He has worked in a wide variety of applications/services like desktop, web and mobile applications.